help with loading win xp on intel 865glc board!

Im having problems loading my carcpu with win xp. I keep getting a message saying, insert boot media in boot device. all the hardware is new in the cpu, it powers up fine and I change the bios so that it boots up from the panasonic
cd/dvd-r external drive by usb connection. I dont have an internal cd-rom drive to load from or a floopy drive. the the harddrive is in disable so it can boot from the cd/dvd drive. Is it posible to boot from this external drive w/o
an os? and every time I try to load win xp disc, it keeps giving me the same message. Im using an intel d865glc micro-atx motherboard. the only thing internal on the cpu is the harddrive. do i need driver to make the cd/dvd load the os? any help please, im about to pull out my hair!